Twenty years ago, Ray Campbell, now a cautious risk- management consultant, was a well-intentioned aid worker dedicated to improving conditions in Lubanda, a newly independent African country. He is forced to reconsider that year when a friend from his time in Lubanda is found murdered in a New York alley. Signs suggest that this tragedy is rooted in the far more distant one of Martine Aubert, the only woman Ray ever truly loved and whose fate he'd sealed in a moment of grievous error.